11981786348 has 72 divisors (see below), whose sum is σ = 24713453520. Its totient is φ = 5067619200.

The previous prime is 11981786317. The next prime is 11981786351. The reversal of 11981786348 is 84368718911.

It is a happy number.

11981786348 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 11981786293 and 11981786302.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7501886 + ... + 7503482.

It is an arithmetic number, because the mean of its divisors is an integer number (343242410).

Almost surely, 2^11981786348 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11981786348, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12356726760).

11981786348 is an abundant number, since it is smaller than the sum of its proper divisors (12731667172).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11981786348 is a wasteful number, since it uses less digits than its factorization.

11981786348 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2095 (or 2086 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 56.

The spelling of 11981786348 in words is "eleven billion, nine hundred eighty-one million, seven hundred eighty-six thousand, three hundred forty-eight".